chore: fix number and bigint coercion

.changeset/hip-actors-wink.md

@@ -0,0 +1,5 @@
+---
+'@conform-to/zod': minor
+---
+
+fix number and bigint coercion

packages/conform-zod/coercion.ts

@@ -118,9 +118,15 @@ export function enableTypeCoercion<Schema extends ZodTypeAny>(
 	} else if (def.typeName === 'ZodNumber') {
 		schema = any()
 			.transform((value) =>
-				coerceString(value, (text) =>
-					text.trim() === '' ? Number.NaN : Number(text),
-				),
+				coerceString(value, (text) => {
+					const number = Number(text);
+
+					if (isNaN(number)) {
+						return text;
+					}
+
+					return number;
+				}),
 			)
 			.pipe(type);
 	} else if (def.typeName === 'ZodBoolean') {
@@ -132,14 +138,14 @@ export function enableTypeCoercion<Schema extends ZodTypeAny>(
 	} else if (def.typeName === 'ZodDate') {
 		schema = any()
 			.transform((value) =>
-				coerceString(value, (timestamp) => {
-					const date = new Date(timestamp);
+				coerceString(value, (text) => {
+					const date = new Date(text);
 
 					// z.date() does not expose a quick way to set invalid_date error
 					// This gets around it by returning the original string if it's invalid
 					// See https://github.com/colinhacks/zod/issues/1526
 					if (isNaN(date.getTime())) {
-						return timestamp;
+						return text;
 					}
 
 					return date;
@@ -148,7 +154,15 @@ export function enableTypeCoercion<Schema extends ZodTypeAny>(
 			.pipe(type);
 	} else if (def.typeName === 'ZodBigInt') {
 		schema = any()
-			.transform((value) => coerceString(value, BigInt))
+			.transform((value) =>
+				coerceString(value, (text) => {
+					try {
+						return BigInt(text);
+					} catch {
+						return text;
+					}
+				}),
+			)
 			.pipe(type);
 	} else if (def.typeName === 'ZodArray') {
 		schema = any()

tests/conform-zod.spec.ts

@@ -400,7 +400,7 @@ describe('conform-zod', () => {
 			).toEqual({
 				status: 'error',
 				payload: { test: ' ' },
-				error: { test: ['invalid'] },
+				error: { test: ['min'] },
 				reply: expect.any(Function),
 			});
 		});